Book Image

Mastering Julia - Second Edition

By : Malcolm Sherrington
Book Image

Mastering Julia - Second Edition

By: Malcolm Sherrington

Overview of this book

Julia is a well-constructed programming language which was designed for fast execution speed by using just-in-time LLVM compilation techniques, thus eliminating the classic problem of performing analysis in one language and translating it for performance in a second. This book is a primer on Julia’s approach to a wide variety of topics such as scientific computing, statistics, machine learning, simulation, graphics, and distributed computing. Starting off with a refresher on installing and running Julia on different platforms, you’ll quickly get to grips with the core concepts and delve into a discussion on how to use Julia with various code editors and interactive development environments (IDEs). As you progress, you’ll see how data works through simple statistics and analytics and discover Julia's speed, its real strength, which makes it particularly useful in highly intensive computing tasks. You’ll also and observe how Julia can cooperate with external processes to enhance graphics and data visualization. Finally, you will explore metaprogramming and learn how it adds great power to the language and establish networking and distributed computing with Julia. By the end of this book, you’ll be confident in using Julia as part of your existing skill set.
Table of Contents (14 chapters)

Developing in Julia

Julia is a feature-rich language. It was designed to appeal to novice programmers and purists alike. For those whose interests lie in data science, statistics, and mathematical modeling, Julia is well-equipped to meet all their needs.

Our aim is to furnish you with the necessary knowledge to begin programming in Julia almost immediately. So, rather than begin with an overview of the language’s syntax, control structures, and the like, we will introduce Julia’s facets gradually over the rest of this book. Over the next four chapters, we will look at some of the basic and advanced features of the Julia core. Many of the features—such as graphics and database access, which are implemented via the package system—will be left until later when discussing more specific aspects of programming Julia.

In this chapter, we will be discussing manipulating Julia’s data structures and will cover the following topics:

  • Data types such as integers and floating-point and complex numbers
  • Vectors, matrices, and multi-dimensional arrays
  • List comprehensions and broadcasting
  • Recursive functions
  • Characters and strings
  • Complex and rational numbers
  • Data arrays and data frames
  • Dictionaries, sets, stacks, and queues

If you are familiar with programming in Python, R, MATLAB, and so on, you will not find the journey terribly arduous; in fact, we believe it will be a particularly pleasant one.